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FindPython2.cmake
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FindPython2.cmake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindPython2
-----------
Find Python 2 interpreter, compiler and development environment (include
directories and libraries).
Three components are supported:
* ``Interpreter``: search for Python 2 interpreter
* ``Compiler``: search for Python 2 compiler. Only offered by IronPython.
* ``Development``: search for development artifacts (include directories and
libraries)
* ``NumPy``: search for NumPy include directories.
If no ``COMPONENTS`` is specified, ``Interpreter`` is assumed.
To ensure consistent versions between components ``Interpreter``, ``Compiler``,
``Development`` and ``NumPy``, specify all components at the same time::
find_package (Python2 COMPONENTS Interpreter Development)
This module looks only for version 2 of Python. This module can be used
concurrently with :module:`FindPython3` module to use both Python versions.
The :module:`FindPython` module can be used if Python version does not matter
for you.
.. note::
If components ``Interpreter`` and ``Development`` are both specified, this
module search only for interpreter with same platform architecture as the one
defined by ``CMake`` configuration. This contraint does not apply if only
``Interpreter`` component is specified.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines the following :ref:`Imported Targets <Imported Targets>`
(when :prop_gbl:`CMAKE_ROLE` is ``PROJECT``):
``Python2::Interpreter``
Python 2 interpreter. Target defined if component ``Interpreter`` is found.
``Python2::Compiler``
Python 2 compiler. Target defined if component ``Compiler`` is found.
``Python2::Python``
Python 2 library. Target defined if component ``Development`` is found.
``Python2::NumPy``
NumPy library for Python 2. Target defined if component ``NumPy`` is found.
Result Variables
^^^^^^^^^^^^^^^^
This module will set the following variables in your project
(see :ref:`Standard Variable Names <CMake Developer Standard Variable Names>`):
``Python2_FOUND``
System has the Python 2 requested components.
``Python2_Interpreter_FOUND``
System has the Python 2 interpreter.
``Python2_EXECUTABLE``
Path to the Python 2 interpreter.
``Python2_INTERPRETER_ID``
A short string unique to the interpreter. Possible values include:
* Python
* ActivePython
* Anaconda
* Canopy
* IronPython
``Python2_STDLIB``
Standard platform independent installation directory.
Information returned by
``distutils.sysconfig.get_python_lib(plat_specific=False,standard_lib=True)``.
``Python2_STDARCH``
Standard platform dependent installation directory.
Information returned by
``distutils.sysconfig.get_python_lib(plat_specific=True,standard_lib=True)``.
``Python2_SITELIB``
Third-party platform independent installation directory.
Information returned by
``distutils.sysconfig.get_python_lib(plat_specific=False,standard_lib=False)``.
``Python2_SITEARCH``
Third-party platform dependent installation directory.
Information returned by
``distutils.sysconfig.get_python_lib(plat_specific=True,standard_lib=False)``.
``Python2_Compiler_FOUND``
System has the Python 2 compiler.
``Python2_COMPILER``
Path to the Python 2 compiler. Only offered by IronPython.
``Python2_COMPILER_ID``
A short string unique to the compiler. Possible values include:
* IronPython
``Python2_Development_FOUND``
System has the Python 2 development artifacts.
``Python2_INCLUDE_DIRS``
The Python 2 include directories.
``Python2_LIBRARIES``
The Python 2 libraries.
``Python2_LIBRARY_DIRS``
The Python 2 library directories.
``Python2_RUNTIME_LIBRARY_DIRS``
The Python 2 runtime library directories.
``Python2_VERSION``
Python 2 version.
``Python2_VERSION_MAJOR``
Python 2 major version.
``Python2_VERSION_MINOR``
Python 2 minor version.
``Python2_VERSION_PATCH``
Python 2 patch version.
``Python2_NumPy_FOUND``
System has the NumPy.
``Python2_NumPy_INCLUDE_DIRS``
The NumPy include directries.
``Python2_NumPy_VERSION``
The NumPy version.
Hints
^^^^^
``Python2_ROOT_DIR``
Define the root directory of a Python 2 installation.
``Python2_USE_STATIC_LIBS``
* If not defined, search for shared libraries and static libraries in that
order.
* If set to TRUE, search **only** for static libraries.
* If set to FALSE, search **only** for shared libraries.
``Python2_FIND_REGISTRY``
On Windows the ``Python2_FIND_REGISTRY`` variable determine the order
of preference between registry and environment variables.
the ``Python2_FIND_REGISTRY`` variable can be set to empty or one of the
following:
* ``FIRST``: Try to use registry before environment variables.
This is the default.
* ``LAST``: Try to use registry after environment variables.
* ``NEVER``: Never try to use registry.
``CMAKE_FIND_FRAMEWORK``
On macOS the :variable:`CMAKE_FIND_FRAMEWORK` variable determine the order of
preference between Apple-style and unix-style package components.
.. note::
Value ``ONLY`` is not supported so ``FIRST`` will be used instead.
.. note::
If a Python virtual environment is configured, set variable
``Python_FIND_REGISTRY`` (Windows) or ``CMAKE_FIND_FRAMEWORK`` (macOS) with
value ``LAST`` or ``NEVER`` to select it preferably.
Commands
^^^^^^^^
This module defines the command ``Python2_add_library`` (when
:prop_gbl:`CMAKE_ROLE` is ``PROJECT``), which has the same semantics as
:command:`add_library`, but takes care of Python module naming rules
(only applied if library is of type ``MODULE``), and adds a dependency to target
``Python2::Python``::
Python2_add_library (my_module MODULE src1.cpp)
If library type is not specified, ``MODULE`` is assumed.
#]=======================================================================]
set (_PYTHON_PREFIX Python2)
set (_Python2_REQUIRED_VERSION_MAJOR 2)
include (${CMAKE_CURRENT_LIST_DIR}/FindPython/Support.cmake)
if (COMMAND __Python2_add_library)
macro (Python2_add_library)
__Python2_add_library (Python2 ${ARGV})
endmacro()
endif()
unset (_PYTHON_PREFIX)